Valve.



Patented June 22, 1909.

' ,G. F. SPEER.

VALVE APPLICATION FILED SEPT. 12,1908. 325,729.

g JIJMJY KW 6 WWW face of the seat ring extending from its inner siding; at Fort Worth, in the county of- Be it known that I, GEORGE F.

GEORGE F. SPEER, OF FORT WORTH,

vALvE.

Specification of Letters Patent.

Patented June 22, iscal? Application filed September 12, 1908. I Serial No. 452,691.

To all it may concern: SPEER, a citizen of .the'UmtedStates of America, re-

Ta rrant and State of Texas, have invented krcertain new and useful Improvements in Y Valves, of which the following is a full, clear,

in valves and it has fori'ts object the introand exact description, reference being had to the accom anying drawings, forming part of 10 this spec cation.

--My invention relates to an improvement .ductioninto a valve of a valve seat rin'g provlded with 'a peripheral cutting or knife edge, formed by an annular rabbet in the inner wall. to said peripheral cutting or knife edge,

and that is adapted ,to embed itself in a softer .portion of the annular rabbet formed in the 5.2 l

valve seat of the valve. for the purpose of proa fluid tight joint between said ring and t eportion of the valve to which said q I nnlg is applied.

- igure I is a longitudinal section taken through a globe valve having my improve- .-ment incorporated therein.

enlarged section taken through the seat ring Fig. II is an and the thereto.

In the accompanying drawings, I have portions of the valveadjacent shown my improvement incorporated in a globe valve, but said improvement may be incorporated with equal advantage in other 7 types of valves.

'1 designates the body'of my valve which is provided interiorly with a' ring seat 2 formed with an annular rabbet 2. This ring seat is made of soft metal, such as brass, an the entire valve body with which the ring seat is associated may be of soft metal.

3 is a valve proper that is arranged in opposition to the ring seat. 2.. This valve proper is provided with a-ring seat 4 that is of soft metal such as brass, and may be in the nature of a ring as illustrated 1n the drawings, and which-is set into the valve proper or may be an integral part of thevalve proper in which latter instance the valve proper would be constructed entirely ofsoft metal. The valve proper is carned by' a stem 3 that may be of any suitable construction.

5 designates a seat ringthat is'located in the annular rabbet 2 and therefore interposed between the ring seat 2 of the valve body and the ring seat 4 of the valve pro er. This seat ring is j with a peri heral niife edge 6 formed by an annular rab et 6* in the inner face of the-seat ring and that extends continuously throughout' the ring and is adapted to fit in and bear against the ring seat 2 into which it is capable of cutting a seat for the peripheral knife edge, as illustrated in Fig. II .when pressure is ap lied to the seat ring by the closing of the va ve roper. The seat ring 5 is, in order that 't e result just mentioned may be secured, made of harder metal than that ofrovided at its inner ace which the ringseat 2 is composed, the metal the seat ring to. enter into'the ring seat 2, I

am enabled to maintain an absolutely fluid tight joint between these parts. The seat ring 5 is provided atits outer face with a knife edge .7 which is adapted tobecome embedded in the ring seat 4 ofthe valve proper by cutting thereinto, whereby a fluid tight 1 joint is effected between said ring seat and seat ring. It will be seen that, as a consequence of the seat ring being provided with boththe peripheral knife ed e 6 and the outer knife edge 7, the-joints etween both the outer and inner faces of said ring and the ring seats 2 and 4 which op 'ose said seat ring, produce a completely fluid-proof valve,

and furthermore that this fluid-proof feature of the valve may be continually maintained,

due to the entrance of the knife edges of the seat ring into the ring seats.

1. In a valve, the combination of a body having a rin 'seat formed with an annular rabbet, a va ve proper having a ring seat,

and a seat ring of harder material than the material in the ring seat of saidvalve body and provided with apcripheral knife edge formed'by an annular rabbet in the inner face of the seat ring. extending from its inner wall to said. peripheral knife edge that is adapted-to become embedded the ring: v seat' of said valve body, substantially as set forth. I 2. In a valve, the combinationof-a body having a ring seat formed with an annular rabbet, a valve properhaving a ringseat, a

seat ringof harder material than the material in the ring seat of said valve body and provided with a peripheral knife edge formed by an ennular-rebbet in the inner face of the the ring seat 0i ,seidvelve proper, substanseat ring ixteniing fIOHgitS inner wall to slgid tiefiy as set forth. perip, era kni e edge 1; at is ada. ted to e- T come embedded in the ring seat o said valve I 5 body; and provided at its face opposite that In the presence (mibearing the peripheral knife edge with a C. L. ROBISON,

. knife edge adapted to become embedded'in J. M; DOLEN. 

